Find the sum of the sequence.
A. 132
B. 66
C. 42
D. 90
Answer: A
Mathematics
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Use the appropriate addition formula to find the exact value of the expression.cos 
A. 
+ 
B. 
C. 
- 
D. 
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Simplify.7(
) + 
(
)
A. 122
B. 
C. 46
D. 
Mathematics
?Determine the open intervals on which the graph of 
is concave downward or concave upward.
?
A. ?concave downward on 
B. ?concave downward on 
; concave upward on 
C. ?concave upward on 
; concave downward on 
D. ??concave downward on 
; ?concave upward on 
E. ?concave upward on 
; concave downward on 
Mathematics
Find the prime factorization of the number. ? 864 ?
A. 
B. 
C. 
D. 
E. 
Mathematics